Abstract：Yanmenguan, in Shanxi province, was the inevitable way for Shanxi merchants to get into Mongolia and Russia. Many of them did their business actively in cities north of Yanmenguan, such as Zhangjiakou, Duolun, Guihua, West Baotou, and Fengzhen. Large quantities of goods that carried from hinterland to Mongolia and Russia by Shanxi merchants, were tea, tobacco and sundry goods. And the goods that imported into hinterland basically were livestock and fur. These mercantile activities not only promoted the goods exchange between the Han nationality and Mongolia nationality, but also spurred the development of commercial cities in the north of the Great Wall.
